EP1915006A2 - Appareil et procédé pour le balayage de fréquence dans un terminal mobile - Google Patents

Appareil et procédé pour le balayage de fréquence dans un terminal mobile Download PDF

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Publication number
EP1915006A2
EP1915006A2 EP07118864A EP07118864A EP1915006A2 EP 1915006 A2 EP1915006 A2 EP 1915006A2 EP 07118864 A EP07118864 A EP 07118864A EP 07118864 A EP07118864 A EP 07118864A EP 1915006 A2 EP1915006 A2 EP 1915006A2
Authority
EP
European Patent Office
Prior art keywords
frequency
scanning
available
mobile terminal
bands
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07118864A
Other languages
German (de)
English (en)
Other versions
EP1915006A3 (fr
Inventor
Yu-Shin Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1915006A2 publication Critical patent/EP1915006A2/fr
Publication of EP1915006A3 publication Critical patent/EP1915006A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the present invention relates to an apparatus and method for scanning a frequency in a mobile terminal, and more particularly, to an apparatus and method for scanning a frequency in which a last-used frequency band is periodically re-scanned when a mobile terminal loses a signal and thus scans frequency bands.
  • portable terminals such as a mobile terminal or a Personal Digital Assistant (PDA) are widely used.
  • Usage of portable terminals is becoming widespread, ranging from simple telephone calls and scheduling to capturing images or videos with a built-in digital camera, watching satellite broadcasts, text editing, playing games, navigating, listening to music, sending short messages, and communicating through multimedia messages capable of transmitting/receiving captured images or videos.
  • a portable terminal using a certain frequency to transmit/receive signals provides telephone call services and message services.
  • frequency bands are scanned, starting from a frequency band in which a pre-stored frequency exists, and when a signal is lost, as shown in FIG. 1, frequency-scanning is sequentially carried out starting from a last-used frequency band.
  • FIG. 1 illustrates a scan order of frequency bands when the conventional mobile terminal carries out frequency-scanning.
  • a mobile telecommunication system is composed of ten frequency bands.
  • frequency-scanning is carried out such that a Last-used frequency Band (LB) is first scanned, and thereafter the rest of frequency bands are sequentially scanned.
  • LB Last-used frequency Band
  • WCDMA Wideband Code Division Multiple Access
  • OFDM Orthogonal Frequency Division Multiplexing
  • WiBro Wireless Broadcasting
  • DVD Digital Video Broadcasting
  • a frequency-scanning apparatus and method in which a last-used frequency band is periodically re-scanned when a mobile terminal scans frequency bands.
  • a frequency-scanning apparatus of a mobile terminal including a frequency scanner that detects an available frequency in such a manner that a Last-used frequency Band (LB) in which a last frequency used is included is first scanned when a frequency-scanning event is generated and thereafter the LB is periodically re-scanned while an entire set of frequency bands are scanned.
  • LB Last-used frequency Band
  • a frequency-scanning method of a mobile terminal which includes (1) checking a Last-used frequency Band (LB) when a frequency scanning event is generated; (2) searching for an available frequency from the LB; (3) if no available frequency is detected from the LB, sequentially selecting other frequency bands; (4) searching for an available frequency from the selected frequency bands; (5) if no available frequency is detected from the selected frequency bands, determining whether a predetermined period of time for re-scanning the LB has elapsed; and (6) if the predetermined period of time for re-scanning the LB has elapsed, returning back to step (2) and repeating steps (2) to (6) until the available frequency is detected.
  • LB Last-used frequency Band
  • the present invention provides a frequency-scanning apparatus and method capable of reducing a frequency scan time, whereby a Last-used frequency Band (LB) is periodically re-scanned while frequency-scanning is carried out by a mobile terminal.
  • LB Last-used frequency Band
  • FIG. 2 is a block diagram of a frequency-scanning apparatus of a mobile terminal according to the present invention.
  • the frequency-scanning apparatus includes a controller 200, a frequency manager 202, a frequency scanner 204, and a communicator 206.
  • the communicator 206 transmits/receives packet data as well as a voice signal for a circuit service.
  • a frequency of a Radio Frequency (RF) signal received trough an antenna is decreased, and then the received signal is de-spread and channel-decoded.
  • the received signal is channel-coded and spread, and then the frequency thereof is increased for transmission through the antenna.
  • RF Radio Frequency
  • the frequency manager 202 stores a LB in which a last frequency used is included.
  • the frequency scanner 204 checks the LB by using the frequency manager 202. If an available frequency is detected from the LB, the available frequency is provided to the controller 200. Otherwise, next frequency bands are sequentially selected for scanning. In this case, while frequency bands other than the LB are scanned, the frequency scanner 204 periodically re-scans the LB.
  • FIGs. 3A and 3B illustrate a scan order of frequency bands when frequency-scanning is carried out by a mobile terminal according to the present invention.
  • an LB is re-scanned with a specific period 'x', where the period x equals 2 in FIG. 3A and 4 in FIG. 3B.
  • the controller 200 controls the frequency manager 202 and the frequency scanner 204. That is, the controller 200 may perform functions of the frequency manager 202 and the frequency scanner 204. Although these components are separately constructed in the present invention, this construction is only for explaining the components' functions distinctively. Therefore, in practice, all of these components may be processed by the controller 200, or only a part of these components may be processed by the controller 200.
  • FIG. 4 is a flowchart of a frequency-scanning method of a mobile terminal according to the present invention.
  • step 400 it is checked whether a frequency-scanning event is generated, in step 400. Then, an LB is checked, in step 402. Then, an available frequency is detected from the LB, in step 404. As a result of step 404, if the available frequency is detected from the LB, communication is established using the available frequency, in step 414.
  • step 404 if no available frequency is detected from the LB, next frequency bands are sequentially selected, in step 406. Then, an available frequency is detected from the selected frequency bands, in step 408. As a result of step 408, if the available frequency is detected from the selected frequency bands, the LB is updated, in step 412. Then, communication is established using the available frequency, in step 414.
  • step 408 if no available frequency is detected from the LB, it is determined if it is a period for re-scanning the LB, in step 410. As a result of step 410, if it is not the period for re-scanning the LB, the procedure returns to step 406, and the aforementioned steps are repeated until an available frequency is found.
  • step 410 if it is the period for re-scanning the LB, the procedure returns to step 404, and the aforementioned steps are repeated until the available frequency is found.
  • frequency-scanning when frequency-scanning is carried out for a mobile terminal, an available frequency is detected in such a manner that an LB is first scanned and thereafter is periodically re-scanned while the entire frequency bands are scanned.
  • frequency-scanning can be relatively rapidly achieved in a mobile telecommunication system environment where each operator uses a specific frequency band.
  • Alternate embodiments of the present invention can also comprise computer readable codes on a computer readable medium.
  • the computer readable medium includes any data storage device that can store data that can be read by a computer system. Examples of a computer readable medium include magnetic storage media (such as ROM, floppy disks, and hard disks, among others), optical recording media (such as CD-ROMs or DVDs), and storage mechanisms such as carrier waves (such as transmission through the Internet).
  • the computer readable medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. Also, functional programs, codes, and code segments for accomplishing the present invention can be construed by programmers of ordinary skill in the art to which the present invention pertains.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)
EP07118864.3A 2006-10-20 2007-10-19 Appareil et procédé pour le balayage de fréquence dans un terminal mobile Withdrawn EP1915006A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060102402A KR100811845B1 (ko) 2006-10-20 2006-10-20 이동통신 단말기의 주파수 검색 장치 및 방법

Publications (2)

Publication Number Publication Date
EP1915006A2 true EP1915006A2 (fr) 2008-04-23
EP1915006A3 EP1915006A3 (fr) 2016-01-06

Family

ID=38981017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07118864.3A Withdrawn EP1915006A3 (fr) 2006-10-20 2007-10-19 Appareil et procédé pour le balayage de fréquence dans un terminal mobile

Country Status (3)

Country Link
US (1) US7991395B2 (fr)
EP (1) EP1915006A3 (fr)
KR (1) KR100811845B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8559063B1 (en) 2012-11-30 2013-10-15 Atiz Innovation Co., Ltd. Document scanning and visualization system using a mobile device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110055029A (ko) * 2009-11-19 2011-05-25 삼성전자주식회사 이동통신 단말기에서 캠프온을 위한 장치 및 방법
CN103875199A (zh) * 2011-08-12 2014-06-18 熵敏通讯公司 在用于多个家庭网络的网络设备中选择频带的方法
TWI491256B (zh) * 2012-12-03 2015-07-01 Mstar Semiconductor Inc 衛星數位影像廣播信號的頻道掃描方法
KR101508843B1 (ko) * 2013-09-10 2015-04-07 삼성에스디에스 주식회사 무선 랜에서 지역에 따라 상이한 사용 주파수 대역을 검색하기 위한 기법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6229996B1 (en) * 1997-12-12 2001-05-08 Nokia Mobile Phones Limited Method and apparatus for increasing a probability that a dual-band mobile station will acquire a desired autonomous system
US6343070B1 (en) * 1998-06-08 2002-01-29 Ericcson Inc. Methods for reducing channel acquisition times in a radiotelephone communications system and related mobile terminals
EP1459579B1 (fr) * 2001-12-19 2011-06-15 Nokia Corporation Procede de commande d'un dispositif de telecommunication sans fil multi-bande et/ou multi-mode
WO2003092313A1 (fr) * 2002-04-26 2003-11-06 Nokia Corporation Procede d'acceleration de la synchronisation par une liste de frequences de recherche contenant un nombre limite de frequences de recherche
US7013140B2 (en) * 2002-09-19 2006-03-14 Telefonaktiebolaget L.M. Ericsson Mobile terminals and methods for performing fast initial frequency scans and cell searches
KR100631592B1 (ko) * 2004-09-13 2006-10-09 엘지전자 주식회사 다중 밴드 이동 통신 단말기의 네트워크 탐색 방법
KR100703481B1 (ko) * 2005-01-18 2007-04-03 삼성전자주식회사 멀티밴드 지원 단말기에서의 자동 주파수밴드 설정 방법
US7313365B2 (en) * 2005-03-01 2007-12-25 Kyocera Wireless Corp. Management of digital wireless connections

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8559063B1 (en) 2012-11-30 2013-10-15 Atiz Innovation Co., Ltd. Document scanning and visualization system using a mobile device

Also Published As

Publication number Publication date
KR100811845B1 (ko) 2008-03-10
EP1915006A3 (fr) 2016-01-06
US20080096554A1 (en) 2008-04-24
US7991395B2 (en) 2011-08-02

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